Company lists · Data refreshed November 2026

Top 23 Real-time communication platform developers based in the United Kingdom

RevenueBase identified 86 company matches for real-time communication platform developers associated with the United Kingdom as of November 2026 and tracks 2,024 professional contacts across them, including 752 with verified work emails. London is the largest hub.

This list covers company matches for real-time communication platform developers associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 5, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 5, 2026 How this list was built
86Companies
2,024Contacts tracked
752Verified emails
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The 23 largest real-time communication platform developers based in the United Kingdom

Ranked by team size
Top 23 of 86 company matches for real-time communication platform developers based in the United Kingdom, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchLondon, United KingdomHQ recorded Nov 5, 20261,001-5,000423 contacts →

Exact match

“We've moved!”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2Exact matchLondon, United KingdomHQ recorded Nov 5, 202651-20099 contacts →

Exact match

“tyntec is a cloud communications provider enabling businesses to communicate easier with their customers, workforce and machines.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchLondon, United KingdomHQ recorded Nov 5, 202651-20068 contacts →

Exact match

“Ably helps teams deliver resilient AI UX and high-performance live experiences that stay fast and in sync worldwide.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact matchBolton, United KingdomHQ recorded Nov 5, 202651-20066 contacts →

Exact match

“Born in Bolton and connected across Europe, Firstcom Europe delivers technology without intimidation, helping businesses communicate, connect, protect and grow through telephony…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchGuildford, United KingdomHQ recorded Nov 5, 202651-20064 contacts →

Exact match

“Nebula is a leading SaaS provider of workplace communications software, delivering powerful, secure, and adaptable solutions and applications for voice, messaging, customer…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchLondon, United KingdomHQ recorded Nov 5, 202651-20059 contacts →

Exact match

“comitFS is the independent and vendor-neutral integrated communication solution provider to the financial markets: uniquely bringing together all aspects of Services, Products…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact matchTula, United KingdomHQ recorded Nov 5, 202651-20051 contacts →

Exact match

“ITooLabs is global software vendor with own product ITooLabs Communications Server.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8Exact matchLondon, United KingdomHQ recorded Nov 5, 202611-5044 contacts →

Exact match

“Microtalk: Wholesale SMS & Carrier-Grade Connectivity Simplified For over 15 years, Microtalk has empowered businesses globally with reliable voice, messaging, and cloud…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchSlough, United KingdomHQ recorded Nov 5, 202651-20040 contacts →

Exact match

“We are a leading worldwide provider of cloud-based and customer hosted managed visual communication and collaboration services.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchLondon, United KingdomHQ recorded Nov 5, 202611-5036 contacts →

Exact match

“QuickBlox is a leading cloud communication platform helping businesses bring AI-driven chat, video, and automation into their digital products-quickly, securely, and at scale.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchLondon, United KingdomHQ recorded Nov 5, 202611-5033 contacts →

Exact match

“Xinix is UK’s leading cloud-based unified communication provider making persistent efforts towards modernizing business communications.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12Exact matchRossendale, United KingdomHQ recorded Nov 5, 202651-20024 contacts →

Exact match

“At Mission Labs we have a single vision: to power the future of business communications.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchLondon, United KingdomHQ recorded Nov 5, 202611-5015 contacts →

Exact match

“Heed is a leading provider of innovative communication solutions for the modern workplace.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchLondon, United KingdomHQ recorded Nov 5, 202611-5011 contacts →

Exact match

“Provide your clients with exceptional communication experience from prospect to long term client.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchCambridge, United KingdomHQ recorded Nov 5, 20261-1010 contacts →

Exact match

“1plex is a Microsoft Teams specialist based in Cambridge, helping organisations transform how they communicate and collaborate.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchLiverpool, United KingdomHQ recorded Nov 5, 20261-1010 contacts →

Exact match

“At Convrs, we understand how excellent communication is crucial to building lasting customer relationships and driving business success.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchLeeds, United KingdomHQ recorded Nov 5, 202611-509 contacts →

Exact match

“The Technology Group are a managed communications provider, helping businesses and organisations to better communicate with their customers and teams, by embracing voice over IP…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Nov 5, 202611-508 contacts →

Exact match

“At ZiAAS, we're passionate about harnessing the power of technology to transform businesses and streamline operations.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchLetchworth Garden City, United KingdomHQ recorded Nov 5, 202651-2007 contacts →

Exact match

“AVC One delivers a unified communications, infrastructure and technology platform.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchLondon, United KingdomHQ recorded Nov 5, 20261-106 contacts →

Exact match

“THE MOBILE FIRST COMMUNICATION PLATFORM WITH FMC & WebRTC Apalo takes smarter communications to the next level, combining a comprehensive set of collaboration tools and rich…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchFareham, United KingdomHQ recorded Nov 5, 202611-505 contacts →

Exact match

“sipsynergy is the new standard in reliable, high quality hosted communications and collaboration.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchDatchet, United KingdomHQ recorded Nov 5, 202651-2005 contacts →

Exact match

“Designed to Talk (DTT) has re-designed the way business technology is delivered managed and used.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact matchWestbury, United KingdomHQ recorded Nov 5, 202611-504 contacts →

Exact match

“At Voice Simplified we believe that all businesses, large and small, should be able to communicate without the need for prohibitive and expensive licensing or infrastructure.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

Showing 23 of 86 real-time communication platform developers based in the United Kingdom

See the full list, filter by size, metro and specialty, and access 752 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Real-time communication platform developers based in the United Kingdom at a glance

As of Nov 5, 2026
37.2%Verified-email coverage
23.5Average contacts per company
11-50Median size (employees)
40.7%Largest-city concentration · London
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
32
11-50
26
51-200
18
201-500
5
501-1,000
1
1,001-5,000
1
10001+
1

Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 86 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United Kingdom whose business descriptions match “real-time communication platform developers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 752 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on November 5, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Real-time communication platform developers by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “real-time communication platform developers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many real-time communication platform developers are there based in the United Kingdom?

RevenueBase identified 86 company matches for real-time communication platform developers associated with the United Kingdom as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Imimobile Part Of Webex tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most real-time communication platform developers?

London leads with 35 company records, followed by Cheltenham (3) and Coventry (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 752 professional contacts with verified work emails tracked across these 86 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 5, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.